Not every tree here is planted to be eaten, some are planted just to make the ground better for whatever comes next, and this is one of those.
The Basics
Sesbania sesban, also called Egyptian riverhemp or sesban, is a fast-growing, nitrogen-fixing shrub or small tree in the pea family, Fabaceae.
Origin and Habitat
Native to tropical Africa and naturalized widely across Asia, commonly used in agroforestry for soil building.
What It Looks Like
A quick-growing, short-lived shrubby tree with fine, feathery leaves and small yellow pea-like flowers, rarely living past ten years or so.
Uses and Flavor
Not grown here for food, it’s a classic nurse and pioneer species, used elsewhere as fodder and green manure, valued mainly for what it does underground rather than what it produces above it.
Growing It Here
Seeds originally from Paul at Regenerations Botanical Garden on Kauai. Grows fast, resilient, and it’s one of the few things that’ll actually establish in our driest, windiest front yard spots where neem and even kukui have failed. Basically pigeon pea on steroids as a nurse tree. Honestly, given the choice, I prefer working with neneleau over sesbania for this job, but sesbania earns its keep where neneleau won’t grow.
Pests and Diseases to Watch For
Nothing notable to report, though as a short-lived species it’s not one I expect to keep around forever anyway.
Kenta’s Take
When neem and kukui both give up on a spot, that tells you something about the site, not the trees. Glad to have something that’ll actually take hold there instead, even if gliricidia and neneleau remain my favorite nurse trees overall.